Steve:

If this is true, I can really see a significant  advantage of the noise
bridge over the TW1.

Sometimes, it's good to know where an antenna is actually resonating, which
is harder to do with the TW1, especially if it is somewhere out of an
amateur band.

Tom Behler: KB8TYJ


-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Steve Forst
Sent: Thursday, August 29, 2013 6:09 PM
To: [log in to unmask]
Subject: Re: MFJ Noise Bridge General Quiry

I know the current thread on  using a noise bridge deals with adjusting an
antenna tuner, but  couldn't it also be used to find the resonant spot on an
antenna that is resonant out of band?


73, Steve KW3A






On 8/29/2013 5:56 PM, Howard, W A 9 Y B W wrote:
> Tom,
>
> I just took a look, so-to-speak at the two units.  I can't tell the 
> difference.  I had my sighted son look at them and he said the only 
> difference was the MFJ or Vectronics names.  In fact, he said the font 
> of the printing on the two units is identical, remove the 
> manufacturers name and all is the same.
>
> Howard
>
> ----- Original Message -----
> From: "Tom Behler" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, August 29, 2013 4:30 PM
> Subject: Re: MFJ Noise Bridge General Quiry
>
>
>> Howard:
>>
>> Is there any significant functional or quality difference between the 
>> two noise bridge tuning aids?
>>
>> 73 de KB8TYJ
>>
>>
>> -----Original Message-----
>> From: For blind ham radio operators 
>> [mailto:[log in to unmask]]
>> On Behalf Of Howard, W A 9 Y B W
>> Sent: Thursday, August 29, 2013 5:05 PM
>> To: [log in to unmask]
>> Subject: Re: MFJ Noise Bridge General Quiry
>>
>> Bob,
>>
>> I purchased both one of the MFJ tunner aids and one of the Vectronics 
>> tuner aids in June and as of this morning it was still listed on the 
>> Vectronics page of MFJ.
>>
>> The two units are identical in appearance and have the respective 
>> company names.
>>
>> Howard #3
>>
>> ----- Original Message -----
>> From: "Bob, K8LR" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Thursday, August 29, 2013 3:29 PM
>> Subject: Re: MFJ Noise Bridge General Quiry
>>
>>
>>> I'm glad to see that MFJ has come out with the 212 noise bridge to 
>>> replaced the discontinued VEC512.  If the new MFJ 212 works as well 
>>> as the old VEC512, it is a great piece of equipment to put in line 
>>> to quickly tune an antenna without transmitting a signal.
>>>
>>> Bob, K8LR, [log in to unmask]
>>>
>>> ----- Original Message -----
>>> From: "Tom Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Thursday, August 29, 2013 4:03 PM
>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>
>>>
>>> Howard:
>>>
>>> Thanks very much.
>>>
>>> What you sent earlier was actually quite self explanatory, so I 
>>> guess that covers it.
>>>
>>> Tom Behler: KB8TYJ
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: For blind ham radio operators
>>> [mailto:[log in to unmask]]
>>> On Behalf Of Howard, W A 9 Y B W
>>> Sent: Thursday, August 29, 2013 1:43 PM
>>> To: [log in to unmask]
>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>
>>> Tom,
>>>
>>> I included the complete instructions from MFJ in the body of my 
>>> earlier post on the tuner aid.
>>>
>>> Howard #3
>>> ----- Original Message -----
>>> From: "Tom Behler" <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Thursday, August 29, 2013 12:34 PM
>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>
>>>
>>>> Got it, Howard.
>>>>
>>>> These are good points to be noted for sure.
>>>>
>>>> I'll be interested in what others have to say, but I especially 
>>>> like the idea of not having to put a signal on the air.
>>>>
>>>> Does the noise bridge come with helpful instructions??  I ask this 
>>>> because in my experience with MFJ, their instruction manuals often 
>>>> leave a lot to be desired.
>>>>
>>>> Tom Behler: KB8TYJ
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: For blind ham radio operators 
>>>> [mailto:[log in to unmask]]
>>>> On Behalf Of Howard, W A 9 Y B W
>>>> Sent: Thursday, August 29, 2013 1:26 PM
>>>> To: [log in to unmask]
>>>> Subject: Re: MFJ Noise Bridge General Quiry
>>>>
>>>> Tom,
>>>>
>>>> By using the SWR function on your TW1 in the tone mode, you can 
>>>> tune your tuner for the lowest pitch tone which will be of course 
>>>> the lowest SWR.
>>>> In
>>>> order to adjust your tuner, you will have to transmit a signal on 
>>>> the air.
>>>>
>>>> With the MFJ or Vectronics tuner aid, you do not have to put a 
>>>> signal on the air.
>>>>
>>>> It must be noted that the tuner aid is rated at 300 watts or less.  
>>>> You would insert this right after your transceiver and adjust your 
>>>> tuner while bypassing your linear amp, if you have one.
>>>>
>>>> 73
>>>>
>>>> Howard #3
>>>>
>>>> ----- Original Message -----
>>>> From: "Tom Behler" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Thursday, August 29, 2013 12:13 PM
>>>> Subject: MFJ Noise Bridge General Quiry
>>>>
>>>>
>>>>> Hi, all.
>>>>>
>>>>> Please forgive this quiry, since I'm certain that, for many on the 
>>>>> list, it is rather elementary.
>>>>>
>>>>> The recent discussion of the MFJ noise bridge, and its possible 
>>>>> discontinuation, is making me want to learn more about the product 
>>>>> and its potential usefulness for me.
>>>>>
>>>>> Right now, when I am working with antennas and my Tentech 238A 
>>>>> manual tuner, I use the LDG TW1 to measure SWR, and both forward 
>>>>> and reflected power.
>>>>> Although I do find the TW1 to be less-than-totally accurate, 
>>>>> especially on the lower bands in comparison to the SWR/watt meter 
>>>>> on my TS590, it has been sufficient in meeting  my needs at least 
>>>>> for the most part.
>>>>>
>>>>> Is there a compelling reason why I might want to consider 
>>>>> purchasing the MFJ noise bridge?  In other words, what could it 
>>>>> help me with that the TW1 is unable to do?
>>>>>
>>>>> Of course, one could always make the argument that the MFJ noise 
>>>>> bridge could serve as a useful back-up, should my TW1 die, which 
>>>>> may be a good enough argument in and of itself.
>>>>>
>>>>> Just thinking out loud here, I guess.
>>>>>
>>>>> Tom Behler: KB8TYJ
>
>
>